What is the area formula of an obtuse triangle?
1 Answer
Dec 26, 2015
The area of ANY triangle equals to half of a product of its base by its altitude. That includes triangles with an obtuse angle.
See below.
Explanation:
Consider triangle
Its area equals to a difference between area of
The first one equals to
The second one equals to
Their difference equals to
As you see, the formula is exactly as for a triangle with all acute angles.